1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Thepotemich [5.8K]
3 years ago
5

If a blood vessel has valves, it probably is a

Biology
1 answer:
Len [333]3 years ago
3 0
If it has valves then it is a vein.
You might be interested in
Consider the model of the oxygen cycle as it moves through the various spheres of Earth. One assumption we can make after analyz
Afina-wow [57]

Answer:

B)Photosynthesis releases oxygen into the atmosphere while aerobic respiration removes oxygen from the atmosphere.

Explanation:

Only option B satisfies the answer to the question.

We know that photosynthesis is the process whereby green plants manufacture their foods in the presence of carbon dioxide and sunlight. Carbondioxie in the environment is used to manufacture food in plants. The bye product of photosynthesis is oxygen gas. Oxygen gas is used for aerobic respiration in animals and is essential for their life. This way photosynthesis adds to the pool of oxygen in the atmosphere and aerobic respiration removes from the pool.

6 0
2 years ago
Read 2 more answers
Which of the following statements are true?
Genrish500 [490]

Answer:

I think A is true

Explanation:

Any combination of atoms is a molecule, but when its a combination of atoms from different elements, its known as a compound.

4 0
2 years ago
Help! plz hurry...Will mark brainliest...Begginers accepted ;)
goldfiish [28.3K]
I'm thinking either the first or second answer. Sorry if this doesn't help.<span />
8 0
3 years ago
In humans there is approximately 30% adenine (A). What is the percentage of each of the other 3 DNA bases?
kvv77 [185]

In Double Stranded DNA , Adenine pairs with Thymine as we know, it means amount of A = Amount of T. Here A=30% so T=30%

Total will be 100% (for all 4 bases) , left out is 30 % which will be equally divided by Guanine and Cytocine , hence G=20% and C=20%.

A=30% T=30% G=20% C=20%

7 0
2 years ago
A biologist adds a vitamin solution, which acts as a co-factor, to an enzyme/substrate solution. What affect will this have on t
Contact [7]
I would go with It will increase the reactivity with the substrates. Because if there is no factors, the <span>rate of enzyme activity will increase.
</span>
Hoped I helped :)
3 0
3 years ago
Read 2 more answers
Other questions:
  • What is the name of the process by which cells convert food energy into atp energy?
    9·1 answer
  • Which of these is a major trend in land plant evolution?
    14·2 answers
  • Although fertilizers have been very important in increasing the food supply, there have
    9·1 answer
  • 10. Which criterion is not used to describe a mass movement event?
    7·1 answer
  • Does the Impala animal have a territory?
    9·1 answer
  • About four or five days after fertilization, a group of cells forms a ball-like
    12·2 answers
  • In your own words, explain the effect of greenhouse gasses, what can
    9·1 answer
  • Scheme for Igneous Rock Identification CRYSTAL
    5·1 answer
  • The MN blood group in humans is determined by two alleles of a single gene. In a population containing 90 individuals with genot
    12·1 answer
  • Why do we shiver when we’re cold?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!